CN207516430U - A kind of Hall current sensor for electric vehicle - Google Patents
A kind of Hall current sensor for electric vehicle Download PDFInfo
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- CN207516430U CN207516430U CN201721556121.XU CN201721556121U CN207516430U CN 207516430 U CN207516430 U CN 207516430U CN 201721556121 U CN201721556121 U CN 201721556121U CN 207516430 U CN207516430 U CN 207516430U
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- electric vehicle
- current sensor
- communication interface
- hall current
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Abstract
The utility model provides a kind of Hall current sensor for electric vehicle, including a poly- magnetic core, a Hall element is provided in the air gap of the poly- magnetic core, the Hall element is connected with a micro-control processing unit, the micro-control processing unit is connected with a CAN communication interface, and the CAN communication interface is connect with electric vehicle central control unit.The Hall current sensor, it is provided with CAN communication interface on a sensor, multiple Hall current sensors only need to can be just connected in parallel by electric vehicle central control unit by CAN bus all the way, and the collected current signal of all current sensors is converged by digital communication mode.Including power cord, it is only necessary to which 4 cables greatly reduce the quantity of wiring, save installation space, and installation connection is simple and clear, and construction and maintenance difficulty reduce.
Description
Technical field
The utility model is related to electric vehicle engineering fields, especially relate to a kind of Hall current for electric vehicle
Sensor.
Background technology
With advances in technology, the energy of automobile is more and more diversified, has occurred hybrid vehicle and pure now
The new-energy automobiles such as electric vehicle.
In existing electric vehicle, current sensor exports analog voltage signal or simulation electricity by analog circuit mode
Signal is flowed, is sent to electric vehicle central control unit.Since the current channel way that need to be measured is more, especially in electric motor coach
In vehicle BMS battery management systems, the current channel way roads up to up to a hundred that need to measure are required for independent wiring transmission letter per channel
Number, therefore cable connection quantity is very big, complicated, the installation space needed is larger, and reliability is not high.
Utility model content
The utility model in order to overcome the above-mentioned deficiencies of the prior art, provides a kind of few use of wiring quantity simple in structure
In the Hall current sensor of electric vehicle.
To achieve these goals, the utility model embodiment adopts the following technical scheme that：
A kind of Hall current sensor for electric vehicle, including a poly- magnetic core, in the air gap of the poly- magnetic core
A Hall element is provided with, the Hall element is connected with a micro-control processing unit, and the micro-control processing unit is connected with a CAN
Communication interface, the CAN communication interface are connect with electric vehicle central control unit.
Due to a kind of Hall current sensor for electric vehicle provided by the utility model, it is provided on a sensor
CAN communication interface, electric vehicle central control unit just need to can only be sensed multiple Hall currents by CAN bus all the way
Device is connected in parallel, and the collected current signal of all current sensors is converged by digital communication mode.Including power supply
Including line, it is only necessary to which 4 cables greatly reduce the quantity of wiring, save installation space, installation connection is simple and clear, applies
Work and maintenance difficulty reduce.
Preferably, the micro-control processing unit uses ARM Cortex-M0+ processors.
Since ARM Cortex-M0+ processors have the advantages that super low-power consumption, inexpensive, the micro-control in the utility model
Processing unit uses ARM Cortex-M0+ processors, can reduce power consumption, cost-effective.
It is further preferred that the ARM Cortex-M0+ processors are specially 32 ARMCortex-M0+ processors.
Since 32 ARM Cortex-M0+ processors employ inexpensive 90 nanometers of low-power consumption (LP) techniques, power consumption is only
9 μ A/MHz, 1/3rd of about 8 or 16 bit processors, higher performance can be but provided.Therefore, in the utility model
ARM Cortex-M0+ processors use 32 ARM Cortex-M0+ processors, can be while performance is improved, further
Save energy consumption.
Preferably, the CAN communication interface uses TJA1051T CAN transceivers.
Since TJA1051T CAN transceivers have low-power consumption, extremely low electromagnetic radiation (EME), superpower electromagnetism interference
(EMI) performance.Therefore, the utility model CAN communication interface uses TJA1051T CAN transceivers, can further improve its property
Energy.
Further preferred, the TJA1051T CAN transceivers are connected with a common mode choke.
Since common mode choke has high common mode noise rejection and low differential mode noise signal rejection ability, this practicality
It is novel to connect a common mode choke in TJA1051T CAN transceivers, the noise of electronic equipment can be reduced.
Description of the drawings
Fig. 1 is the structural representation of a kind of Hall current sensor for electric vehicle that the utility model embodiment provides
Figure.
Wherein, the corresponding toponym is marked to be in attached drawing：The poly- magnetic cores of 1-, 2- Hall elements, 3- micro-control processing units,
4-CAN communication interfaces.
Specific embodiment
To make the purpose of this utility model, technical solution and advantage clearer, implement below in conjunction with the utility model
Attached drawing in example, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described reality
It is the utility model part of the embodiment to apply example, instead of all the embodiments.Based on the embodiment in the utility model, ability
It is new to belong to this practicality for domain those of ordinary skill all other embodiments obtained without creative efforts
The range of type protection.
It please referring to Fig.1, the utility model embodiment provides a kind of Hall current sensor for electric vehicle, including
One poly- magnetic core 1 is provided with a Hall element 2 in the air gap of poly- magnetic core 1, and Hall element 1 is connected with a micro-control processing unit
3, micro-control processing unit 3 is connected with a CAN communication interface 4, and CAN communication interface 4 is connect with electric vehicle central control unit.
Since the Hall current sensor is provided with CAN communication interface 4, electric vehicle central control unit need to only pass through one
Multiple Hall current sensors can be just connected in parallel by road CAN bus, be converged by digital communication mode all
The collected current signal of current sensor.Including power cord, it is only necessary to 4 cables greatly reduce the quantity of wiring,
Installation space is saved, installation connection is simple and clear, and construction and maintenance difficulty reduce.
In specific design process, as preference, the micro-control processing unit 3 in the utility model embodiment is specifically adopted
With ARM Cortex-M0+ processors.ARM Cortex-M0+ processors have the advantages that super low-power consumption, low cost.
Further, ARM Cortex-M0+ processors are specifically chosen 32 ARM Cortex-M0+ processors.32 ARM
Cortex-M0+ processors employ inexpensive 90 nanometers of low-power consumption (LP) techniques, power consumption only 9 μ A/MHz, about 8 or 16
/ 3rd of bit processor can but provide higher performance.
In specific design process, as preference, the CAN communication interface 4 in the utility model embodiment uses
TJA1051T CAN transceivers.TJA1051T CAN transceivers have low-power consumption, extremely low electromagnetic radiation (EME), superpower anti-
Electromagnetic interference (EMI) performance.
Further, in specific design process, TJA1051T CAN transceivers have been also connected with a common mode choke.Altogether
Mould choke coil uses FERRITE CORE, and Double-wire parallel wound has high common mode noise rejection and low differential mode noise signal rejection ability, energy
The noise of electronic equipment is enough reduced, and is difficult to deform in high speed signal, it is small, easy to use, with the degree of balance is good, makes
The advantages that with convenience, high-quality.
The working method for the Hall current sensor for electric vehicle that the utility model embodiment provides is as follows：
Primary current cable passes through the central hole of current sensor, forms magnetic field.Poly- magnetic core 1 assembles magnetic field, place
Hall element 2 in the air gap of poly- magnetic core 1 detects the magnetic field intensity in magnetic core, and it is single to micro-control processing to be converted into electric signal
Member 3.Micro-control processing unit 3 calculates the collected voltage signal for representing current value and temperature-compensating by formula, obtains essence
Accurate primary current value.The primary current value that micro-control processing unit 3 will obtain by CAN communication interface 3, is sent to upper
Electric vehicle central control unit.
It should be understood by those skilled in the art that, the above is only the preferred embodiment of the present invention, not it is used for
Limit the range that the utility model is implemented, all shape, construction, feature and spirit according to described in the utility model claims range
Carried out by equivalent changes and modifications, the right of the utility model should all be included in.
Claims (5)
1. a kind of Hall current sensor for electric vehicle, which is characterized in that including a poly- magnetic core (1), the poly- magnetic
A Hall element (2) is provided in the air gap of iron core (1), the Hall element (2) is connected with a micro-control processing unit (3), institute
It states micro-control processing unit (3) and is connected with a CAN communication interface (4), the CAN communication interface (4) passes through CAN bus and electronic vapour
Vehicle central control unit connects.
2. the Hall current sensor according to claim 1 for electric vehicle, which is characterized in that the micro-control processing
Unit (3) is ARM Cortex-M0+ processors.
3. the Hall current sensor according to claim 2 for electric vehicle, which is characterized in that the ARM
Cortex-M0+ processors are 32 ARM Cortex-M0+ processors.
4. the Hall current sensor according to claim 1 for electric vehicle, which is characterized in that the CAN communication
Interface (4) is TJA1051T CAN transceivers.
5. the Hall current sensor according to claim 4 for electric vehicle, which is characterized in that the TJA1051T
CAN transceiver is also associated with a common mode choke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721556121.XU CN207516430U (en) | 2017-11-20 | 2017-11-20 | A kind of Hall current sensor for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721556121.XU CN207516430U (en) | 2017-11-20 | 2017-11-20 | A kind of Hall current sensor for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207516430U true CN207516430U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721556121.XU Active CN207516430U (en) | 2017-11-20 | 2017-11-20 | A kind of Hall current sensor for electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655652A (en) * | 2019-02-19 | 2019-04-19 | 国网天津市电力公司电力科学研究院 | A kind of novel TMR current sensor based on longitudinal choke |
-
2017
- 2017-11-20 CN CN201721556121.XU patent/CN207516430U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655652A (en) * | 2019-02-19 | 2019-04-19 | 国网天津市电力公司电力科学研究院 | A kind of novel TMR current sensor based on longitudinal choke |
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